Conditioning and Learning Flashcards
Two differences between negative reinforcement and punishment
1) Negative reinforcement encourages a subject to behave a certain way; punishment encourages a subject to STOP behaving in a certain way 2) Negative reinforcement entails REMOVING a negative event; punishment entails INTRODUCING a negative event
Twin studies
A behavior genetic research method that involves comparison of the similarity of identical (monozygotic; MZ) and fraternal (dizygotic; DZ) twins.
What are the four parts of Social Learning?
- Attention 2. Retention (involves memory) 3. Initiation – execution of the learned behaviour 4. Motivation – observer must want to engage in the observed behaviour
Chaining
Linking together series of behaviours that result in reinformcement
- Learning the alphabet; each letter stimulates remembering the next
Conditioned Response (CR)
A natural/instinctual response evoked by a Conditioned Stimulus. The CR is almost ALWAYS the same as the UR, and is contingent on a pairing event – i.e. drooling when we see a food chain logo is a CR, though drooling is elicited naturally when acually eating the food (UR).
Fixed interval schedule
Rewards come after a fixed passage of time (i.e., 5 minutes) rather than the number of behaviours - arguably does little to motivate behaviour since the animal gets the same reward napping for 5 minutes then presssing a lever once as it does if it were to press the lever continuously for 5 minutes
Yerkes-Dodson Effect
Law of Effect
Thorndike When a behaviour has a positive (satisfying) effect or consequence, it is likely to be repeated in the future and vice versa. *The bigger the reinforcer or punisher, the stronger the learning
Goal-directed behaviour
Instrumental behavior that is influenced by the animal’s knowledge of the association between the behavior and its consequence and the current value of the consequence. Sensitive to the reinforcer devaluation effect.
Variable ratio schedule
Reinforcements delivered after a DIFFERENT number of correct responses -Ratio cannot be predicted - Takes the most time to learn, but very difficult to extinguish -Slot machines are a prime example – Vegas was built on a variable ratio strategy
Critique of drive-reduction and other homeostasis theories
Individuals often engage in “exploratory behaviour” – seek out stimulation, novel experience or self-destruction
M.E. Olds
Experimented with brain stimulation of pleasure centers in brains of animals
- Animals would perform behaviours to receive stimulation
- Evidence AGAINST drive-reduction theories
n(Ach)
Need for achievement (Henry Murray & David McClelland) -a theory of motivation in which people need success or need to avoid failure
Quantitative Law of Effect
A mathematical rule that states that the effectiveness of a reinforcer at strengthening an operant response depends on the amount of reinforcement earned for all alternative behaviors. A reinforcer is less effective if there is a lot of reinforcement in the environment for other behaviors.
John Atkinson
People who set realistic goals with intermediate risk sets feel pride with accomplishment, and want to succeed more than they feel failure - Because success is so important, these people are unlikely to set unrealistic goals or to persist when success is unlikely
Taste aversion conditioning
The phenomenon in which a taste is paired with sickness (classical conditioning), and this causes the organism to reject—and dislike—that taste in the future.
Fixed ratio schedule
Reinforcement is delivered after a consistent number of responses - i.e. 6:1; after 6 responses, a reward will be given - Vulnerable to extinction
Renewal effect
Recovery of an extinguished response that occurs when the context is changed after extinction. Especially strong when the change of context involves return to the context in which conditioning originally occurred. Can occur after extinction in either classical or instrumental conditioning.
Preparedness
The idea that an organism’s evolutionary history can make it easy to learn a particular association. Because of preparedness, you are more likely to associate the taste of tequila, and not the circumstances surrounding drinking it, with getting sick. Similarly, humans are more likely to associate images of spiders and snakes than flowers and mushrooms with aversive outcomes like shocks.
Also called the GARCIA EFFECT (For John Garcia who studied this)
Differential reinforcement of successive approximations
Shaping in operant conditioning
Spontaneous recovery
Recovery of an extinguished response that occurs with the passage of time after extinction. Can occur after extinction in either classical or instrumental conditioning.
Theories that assert that humans are primarily motivated to maintain physiological or psychological homeostasis
- Fritz Heider’s Balance Theory 2. Charles Osgood and Percy Tannenbaum’s Congruity Theory 3. Leon Festinger’s Cognitive Dissonance Theory -All agree that people are driven to be balanced wrt feelings, ideas and behaviours
Instrumental/Operant Conditioning
A behaviour (rather than a stimulus) is associated with the occurrence of a significant event.
Blocking
In classical conditioning, the finding that no conditioning occurs to a stimulus if it is combined with a previously conditioned stimulus during conditioning trials. Suggests that information, surprise value, or prediction error is important in conditioning.
What is a main difference between classical and operant conditioning?
Operant conditioning is the result of voluntary actions: classical conditioning, on the other hand, depends on “involuntary” behaviour (i.e. drooling is involuntary, while lever pressing involves a decision to do so)
Victor Vroom
Applied expectance value theory to the workplace - found that individuals lowest on the totem pole do not expect to receive company incentives, so are not very motivated to perform
Shaping
Experimenter rewards rats in Skinner Box with food for being near the lever (to encourage lever-pressing behaviour) AKA “Differential reinforcement of successive approximations”
Skinner Box
A rat in a laboratory learns to press a lever to get food – since the rat has no “natural” association between pressing a lever and getting food, the rat must learn this behaviour. Lever-pressing is the “operant behaviour” and food pellets serve as “reinforcers”
Approach-avoidance conflict
Neil Miller - the state one feels when a certain goal has both pros and cons - the further from the goal, the more one focuses on the pros (and vice versa for cons)
E. L. Thorndike
Suggested the law of effect - organisms do what rewards them and stop doing what doesn’t bring rewards - precursor of operant conditioning - wrote the FIRST educational psychology textbook in 1903
Fear conditioning
A type of classical or Pavlovian conditioning in which the conditioned stimulus (CS) is associated with an aversive unconditioned stimulus (US), such as a foot shock. As a consequence of learning, the CS comes to evoke fear. The phenomenon is thought to be involved in the development of anxiety disorders in humans. The CS triggers an emotion (fear) rather than a behaviour (i.e. drooling)